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R. S. H'YER.

(No Model.)

PLOW.

No. 430,027. Patented June 10, 1890.

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UNITED STATES PATENT OFFICE.

ROBERT STEWART HYER, OF GEORGETOWVN, TEXAS.

PLOW.

SPECIFICATION forming part of Letters Patent No. 430,027, dated June 10,1890.

Application filed October 10, 1889- Serial No. 326,563. (No model.)

To all whom it may concern:

Be it known thatI, ROBERT STEWART HYER, of Georgetown, county ofWilliamson, State of Texas, have invented a new and useful Im provementin Flows; and I do hereby declare that the following is afull, clear,and exact description of the invention, which will enable others skilledin the art to which it appertains to make and use the same, referencebeing bad to the accompanying drawings, forming a part thereof.

My invention relates to an improvement in plow-points; and it consistsin the peculiar construction and combination of devices that will bemore fully set forth hereinafter, and particularly pointed out in theclaim.

The object of my invention is to provide a plow-point which is adaptedto be readily attached to and detached from a plow, and to provide meansfor securely holding the plowpoint in position. I In the accompanyingdrawings, Figure 1 is a perspective view from the lower side of a plowprovided with my improved point and fastening devices. Fig. 2 is aperspective View from the landside, showing the point detached. Fig. 3is a detailed perspective view of the point. Fig. 4 is an edge view ofthe same. Fig. 5 is a perspective view of the modified form of myinvention.

The landside-plate A is provided on its inner side with a sole-flange,which has a forward extending arm B, that projects a considerabledistance forward from the landsideplate. The standard 0 and themold-board D are of the usual or any suitable construction. At the frontedge of the mold-board, near its lower side, is secured a loop or keeperE. A lever F is pivoted on a bolt G on the inner side of the mold-boardand has a short arm 1, arranged at nearly right angles and adapted toproject forward beyond the front edge of the mold-board. The plow-pointK, which is of the form shown, is adapted to fit against the front edgeof the mold-board and to bear snugly on the upper and outer sides of theprojecting arm B of the landside-plate. At the. rear side of the pointis a V-shaped recess a,wl1ich receives a similarly-shaped spur b, thatprojects from: the landside, and a pin or stud 0 projects laterally fromthe outer side of arm B and enters an openingdin the point. Near therear inner corner of the point, on the lower side of the same, is adetent wedgeshaped tongue L, which extends rearward from the point, andis adapted to enter the loop or keeper, and thereby secure the point tothe mold-board with its surfaces flush with the surfaces of themold-board. When in this position, the lever F is operated to cause itsshort arm to lap over the joint between the point and the mold-board andto bear against the front end of the detent-tongue and to cause theouter side of the point to be pressed against the arm B, therebyeffectually looking the point to the front edge of the moldboard, aswill be apparent, and bracing the same against lateral strain. A hook Mis pivoted under the rear corner of the mold-board, and may be turned soas to engage the outer end of the lever, as shown in Fig. 1, therebymaintaining the lever in its locking position and preventing the pointfrom becoming detached when in use.

In the modified form of myinvention shown in Fig. 5 the sides of thedetent-tongue are dovetailed, and the keeper is composed of a pair ofparallel plates E, having their opposing edges dovetailed to receive thetongue.

Having thus described my invention, I claim- In a plow, the combinationof the share having the keeper on the mold-board and the arm B, thedetachable point bearing against the outer side of the arm and havingthe tongue engaging the keeper, and the lever F. fulcrumed to themold-board at a point between the keeper and landside, and having theshort arm I, adapted to lap the joint between the point andmold-board-and to engage the outer end of the tongue to lock the latterin the keeper, for the purpose set forth, substantially as described.

In testimony that I claim the foregoing I append my signature.

' ROBERT STEWART HYER.

Witnesses:

W. T. JONES, J EssE STEELE.

